Superflat is a term that refers to a particular style of art that originated in Japan. This style is characterized by its bright colors, crisp lines, and simplified forms. While there are no direct synonyms for the term superflat, there are many words that can be used to describe this type of art. Some possible synonyms include minimalist, graphic, bold, geometric, and stylized. These words all capture aspects of the superflat style, such as its simplicity, strong shapes, and eye-catching visuals. They can be used to describe both traditional artworks and digital illustrations that incorporate elements of superflat design.